2157763520 has 112 divisors (see below), whose sum is σ = 5628058848. Its totient is φ = 781455360.

The previous prime is 2157763453. The next prime is 2157763549. The reversal of 2157763520 is 253677512.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 973934 + ... + 976146.

Almost surely, 2^2157763520 is an apocalyptic number.

2157763520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2157763520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2814029424).

2157763520 is an abundant number, since it is smaller than the sum of its proper divisors (3470295328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2157763520 is a wasteful number, since it uses less digits than its factorization.

2157763520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2518 (or 2508 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 38.

The square root of 2157763520 is about 46451.7332292348. The cubic root of 2157763520 is about 1292.2145164230.

The spelling of 2157763520 in words is "two billion, one hundred fifty-seven million, seven hundred sixty-three thousand, five hundred twenty".